January 23 » The Malolos Constitution is inaugurated, establishing the First Philippine Republic. Emilio Aguinaldo is sworn in as its first President.
February 16 » Iceland's first football club, Knattspyrnufélag Reykjavíkur, is founded.
March 6 » Bayer registers "Aspirin" as a trademark.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
May 30 » Pearl Hart, a female outlaw of the Old West, robs a stage coach 30 miles southeast of Globe, Arizona.
November 28 » The Second Boer War: a British column is engaged by Boer forces at the Battle of Modder River; although the Boers withdraw, the British suffer heavy casualties.
Day of marriage July 12, 1917
The temperature on July 12, 1917 was between 7.0 °C and 21.6 °C and averaged 15.4 °C. There was 13.5 hours of sunshine (82%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 31 » World War I: Germany announces that its U-boats will resume unrestricted submarine warfare after a two-year hiatus.
February 5 » The current constitution of Mexico is adopted, establishing a federal republic with powers separated into independent executive, legislative, and judicial branches.
April 2 » World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany.
June 11 » King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.
September 14 » The Russian Empire is formally replaced by the Russian Republic.
November 7 » The Gregorian calendar date of the October Revolution, which gets its name from the Julian calendar date of 25 October. On this date in 1917, the Bolsheviks storm the Winter Palace.
Day of death January 11, 1977
The temperature on January 11, 1977 was between -0.6 °C and 2.8 °C and averaged 1.3 °C. There was 2.0 mm of rain during 2.2 hours. There was 0.2 hours of sunshine (2%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
July 20 » The Central Intelligence Agency releases documents under the Freedom of Information Act revealing it had engaged in mind-control experiments.
August 10 » In Yonkers, New York, 24-year-old postal employee David Berkowitz ("Son of Sam") is arrested for a series of killings in the New York City area over the period of one year.
August 17 » The Soviet icebreaker Arktika becomes the first surface ship to reach the North Pole.
September 18 » Voyager I takes the first distant photograph of the Earth and the Moon together.
September 30 » Because of NASA budget cuts and dwindling power reserves, the Apollo program's ALSEP experiment packages left on the Moon are shut down.
When copying data from this family tree, please include a reference to the origin: Ronald van 't Hoff, "Family tree Van 't Hoff - Zondag - Bosch - de Zwaan - vd Kolk - Westhuis - Plomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-t-hoff/I34560.php : accessed February 1, 2026), "Bertha Rorije (1899-1977)".
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